/*
 * Copyright (C) 2007-2010 Geometer Plus <contact@geometerplus.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.zlibrary.core.options;

public final class ZLIntegerRangeOption extends ZLOption {
    public final int MinValue;
    public final int MaxValue;

    private final int myDefaultValue;
    private int myValue;

    public ZLIntegerRangeOption(String group, String optionName, int minValue, int maxValue, int defaultValue) {
        super(group, optionName);
        MinValue = minValue;
        MaxValue = maxValue;
        if (defaultValue < MinValue) {
            defaultValue = MinValue;
        } else if (defaultValue > MaxValue) {
            defaultValue = MaxValue;
        }
        myDefaultValue = defaultValue;
        myValue = defaultValue;
    }

    public int getValue() {
        if (!myIsSynchronized) {
            String value = getConfigValue(null);
            if (value != null) {
                try {
                    int intValue = Integer.parseInt(value);
                    if (intValue < MinValue) {
                        intValue = MinValue;
                    } else if (intValue > MaxValue) {
                        intValue = MaxValue;
                    }
                    myValue = intValue;
                } catch (NumberFormatException e) {
                    // System.err.println(e);
                }
            }
            myIsSynchronized = true;
        }
        return myValue;
    }

    public void setValue(int value) {
        if (value < MinValue) {
            value = MinValue;
        } else if (value > MaxValue) {
            value = MaxValue;
        }
        if (myIsSynchronized && (myValue == value)) {
            return;
        }
        myValue = value;
        myIsSynchronized = true;
        if (value == myDefaultValue) {
            unsetConfigValue();
        } else {
            setConfigValue("" + value);
        }
    }
}
